To play the rhythm guitar to make it sound like
Francis plays it, I would prefer to tune the guitar like this:

(From the thickest string to the thinnest)
D|-G-D-G-B-D and put a capo on the 4th fret.  The number
I set for frets will be 0=4, 1=5, 2=6 etc...  This means
that a 0 will be an open string play with the capo on the
4th fret, 1 will be the 5th fret if you didn't have the capo etc...

I'll show you here:

               7.    6.    5.    4.    3.    2.    1. fret no. WITHOUT capo on
       -----|-----|-----|-----|--#--|-----|-----|-----| D